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The Breeze Developer API is a versioned HTTP API at https://api.breeze.blue. All public endpoints sit under /v1/* and return JSON or binary audio.

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Base URL

https://api.breeze.blue/v1

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Authentication

Most endpoints accept an API key via the xi-api-key header. Account management endpoints such as /v1/api-keys require a browser session instead. See authentication for details. 
xi-api-key: brz_xxxxxxxxxxxxxxxx

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Content type

JSON requests use content-type: application/json. Voice cloning uses multipart/form-data. Audio responses are raw binary.

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Errors

Errors return ok: false, a code string, a detail message, and an error field mirroring detail. Validation errors may include a meta object. See errors.

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Rate limits

Breeze applies plan-based concurrent generation limits. See rate limits.

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Explore the API

Convert text to speech

Generate a complete audio response from one text input and saved voice.

Stream text to speech

Receive audio chunks as synthesis progresses for lower-latency playback.

Voices

Understand saved voices, designed voices, cloned voices, and voice_settings.

CLI Reference

Use CLI commands to prototype, inspect API requests, and automate workflows.